Revert .zshrc file to its previous state

I accidentally override .zshrc. The file is now empty. Fyi, I still have one terminal (macos) which loaded its previous configuration. Is it possible to revert it back?

Solution

One possible solution to avoid future mistakes, if you are using vim with its proper undo settings you can get back in time:

" Reference: https://vi.stackexchange.com/a/53/7339
" Let's save undo info!
if !isdirectory($HOME."/.vim")
    call mkdir($HOME."/.vim", "", 0770)
endif
if !isdirectory($HOME."/.vim/undo-dir")
    call mkdir($HOME."/.vim/undo-dir", "", 0700)
endif
set undodir=~/.vim/undo-dir
set undofile

Then you can run the :earlier command, like this:

:earlier 1d

For more about this run :h earlier

A second solution is to create a git repo with your "dotfiles" and then creating symlinks, like:

ln -sfvn ~/.dotfiles/zshrc ~/.zshrc